Script started on Tue Sep 28 15:08:12 1999
strauss[3:08pm] [~/Class/cisc181/examples/]> cat 10-parking-charges.cc 

// Program calculates the parking charge for 3 cars when
// given the input of number of hours they were parked
// A table is printed
// Exercise 3.12 from D&D
#include <iostream.h>
#include <iomanip.h>
#include <math.h>

// this program deals with dollar amounts as integers
// the following in-line functions pull out various components
// of money represented that way
inline int dollarsplace(int money) { return money / 100; }
inline int tencentplace(int money) { return (money % 100)/10; }
inline int onecentplace(int money) { return money % 10; }

int calculate_charges(float);

main ()
{
  float hc1, hc2, hc3;
  int result1, result2, result3;
  // these integers are intended to hold money amounts

  // initialize
  cout << "Enter the number of hours for Customer 1: ";
  cin >> hc1;
  cout << "Enter the number of hours for Customer 2: ";
  cin >> hc2;
  cout << "Enter the number of hours for Customer 3: ";
  cin >> hc3;

  // calculate
  result1 = calculate_charges(hc1);
  result2 = calculate_charges(hc2);
  result3 = calculate_charges(hc3);

  cout << endl;
  
  // print table
  cout.setf(ios::fixed | ios::showpoint);
  cout << setw(10) << "Car";
  cout << setw(10) << "Hours"
       << setw(10) << "Charge" << endl;
  cout << setw(10) << "1";
  cout << setw(10) 
       << setprecision(1) << hc1 
       << setw(10) << dollarsplace(result1) << "." 
       << tencentplace(result1) << onecentplace(result1)
       << endl;
  cout << setw(10) << "2";
  cout << setw(10) 
       << setprecision(1) << hc2 
       << setw(10) << dollarsplace(result2) << "." 
       << tencentplace(result2) << onecentplace(result2)
       << endl;
  cout << setw(10) << "3"
       << setw(10) 
       << setprecision(1) << hc3 
       << setw(10) << dollarsplace(result3) << "." 
       << tencentplace(result3) << onecentplace(result3)
       << endl;
  cout << setw(10) << "TOTAL"
       << setw(10) 
       << setprecision(1) << (hc1 + hc2 + hc3)
       << setw(10) << dollarsplace(result1 + result2 + result3)
       << "." << tencentplace(result1 + result2 + result3)
       << onecentplace(result1 + result2 + result3)
       << endl;

  return 0;
}

int calculate_charges(float hours)
{
  int charge;
  if (hours <= 3)
    return 200;
  else
    {
      charge = 200 + (50 * (ceil(hours) - 3));
    }
  if (charge <= 1000) return charge;
  else return 1000;
}
strauss[3:08pm] [~/Class/cisc181/examples/]> CC -compat 10-parking-charges.cc 

strauss[3:08pm] [~/Class/cisc181/examples/]> a.out

Enter the number of hours for Customer 1: 7
Enter the number of hours for Customer 2: 12
Enter the number of hours for Customer 3: 3

       Car     Hours    Charge
         1       7.0         4.00
         2      12.0         6.50
         3       3.0         2.00
     TOTAL      22.0        12.50
strauss[3:08pm] [~/Class/cisc181/examples/]> a.out

Enter the number of hours for Customer 1: 1
Enter the number of hours for Customer 2: 22
Enter the number of hours for Customer 3: 6

       Car     Hours    Charge
         1       1.0         2.00
         2      22.0        10.00
         3       6.0         3.50
     TOTAL      29.0        15.50
strauss[3:09pm] [~/Class/cisc181/examples/]> exit

script done on Tue Sep 28 15:09:20 1999